diff --git a/.idea/misc.xml b/.idea/misc.xml
index 1c9acf9..76830ba 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -29,6 +29,7 @@
+
diff --git a/.idea/rust.iml b/.idea/rust.iml
index 971bd3a..0650e07 100644
--- a/.idea/rust.iml
+++ b/.idea/rust.iml
@@ -118,6 +118,10 @@
+
+
+
+
@@ -136,6 +140,7 @@
+
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index bdb3b8d..1826468 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -15,10 +15,10 @@
-
+
-
-
+
+
@@ -96,6 +96,7 @@
+
@@ -129,12 +130,12 @@
+
@@ -765,7 +766,14 @@
-
+
+
+
+
+
+
+
+
diff --git a/mutex/Cargo.toml b/mutex/Cargo.toml
new file mode 100644
index 0000000..c6b3678
--- /dev/null
+++ b/mutex/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "mutex"
+version = "0.1.0"
+authors = ["Timothy Warren "]
+edition = "2018"
+
+[dependencies]
diff --git a/mutex/src/main.rs b/mutex/src/main.rs
new file mode 100644
index 0000000..399ba50
--- /dev/null
+++ b/mutex/src/main.rs
@@ -0,0 +1,40 @@
+use std::sync::{Arc, Mutex}; // Rc is not thread safe, but Arc is. (Atomic Reference Count)
+use std::thread;
+
+fn single_thread_example() {
+ let m = Mutex::new(5);
+
+ {
+ let mut num = m.lock().unwrap();
+ *num = 6;
+ } // Reference to mutex value goes out of scope, lock is released
+
+ println!("m = {:?}", m);
+}
+
+fn multi_thread_example() {
+ let counter = Arc::new(Mutex::new(0));
+ let mut handles = vec![];
+
+ for _ in 0..10 {
+ let counter = Arc::clone(&counter);
+ let handle = thread::spawn(move || {
+ let mut num = counter.lock().unwrap();
+
+ *num += 1;
+ });
+ handles.push(handle);
+ }
+
+ for handle in handles {
+ handle.join().unwrap();
+ }
+
+ println!("Result: {}", *counter.lock().unwrap());
+}
+
+fn main() {
+ single_thread_example();
+
+ multi_thread_example();
+}